发明名称 |
METHOD OF OBTAINING A PURE AROMATIC HYDROCARBON FROM A SUMP PRODUCT OF AN EXTRACTIVE DISTILLATION OF A HYDROCARBON MIXTURE |
摘要 |
The method of obtaining a pure aromatic hydrocarbon from a hydrocarbon starting mixture includes extractively distilling the hydrocarbon starting mixture with a selective solvent; feeding the sump product of the extractive distillation through a first and second auxiliary boilers connected in series to form a cooled sump product at a temperature from 105 DEG to 120 DEG C.; delivering the cooled sump product to a separator distillation column at an entry plate in an upper portion of a separator distillation column and operating the separator distillation column to form a reflux in the upper portion; collecting this reflux and heating it with solvent drawn from the sump of the separator distillation column in a third auxiliary boiler; returning the heated reflux to the separator distillation column at another plate under the entry plate to form a liquid phase on the other plate; conducting the liquid phase formed on the other plate through the second auxiliary boiler to form a vapor-liquid mixture by partial vaporization due to heat from the sump product; feeding the vapor-liquid mixture into a lower portion of the separator distillation column to form a vapor in the upper portion of the separator distillation column; wherein the pure aromatic hydrocarbon leaves the top of the separator distillation column.
|
申请公布号 |
US5238540(A) |
申请公布日期 |
1993.08.24 |
申请号 |
US19910766442 |
申请日期 |
1991.09.26 |
申请人 |
KRUPP KOPPERS GMBH |
发明人 |
SKATULLA, LUZIAN;SCHNEIDER, HANS-CHRISTOPH;VOLLMER, HANS-JUERGEN |
分类号 |
B01D3/40;C10G7/08 |
主分类号 |
B01D3/40 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|